The contextual environment of a form consists of the particular meaningful collocations in which it may occur. For example, we define 'out' in terms of its general nonlinguistic environment, which indicates a relationship between the interior and the exterior of an object. However, this does not give all the meaning of 'out', for in the phrase 'Look out!' the morpheme 'out' may not preserve its usual meaning derived from the nonlinguistic environment.
- Nida (1949), Pag. 154